what is the best course of action if a gravity filtration setup seems unsteady?

A nearsighted person with a far point of 4.2m from his eyes would need contact lenses with a power of 4.2D to focus on distant objects.

To determine the power of contact lenses needed for a nearsighted person to focus on distant objects, we need to use the formula: power = 1/focal length. The near point of a nearsighted person is closer than infinity, so we need to use the reciprocal of the far point distance to calculate the focal length.
Focal length = 1/far point distance = 1/4.2m = 0.238m
Now we can calculate the power needed:
Power = 1/focal length = 1/0.238m = 4.2 diopters (D)
Therefore, a nearsighted person with a far point of 4.2m from his eyes would need contact lenses with a power of 4.2D to focus on distant objects.

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The momentum of the kid weighing 30kg is 210kgm/s.

Momentum in physics refers to the tendency of a body to maintain its inertial motion i.e. the product of its mass and velocity, or the vector sum of the products of its masses and velocities.

According to this question, a 30kg kid on a bike is moving in the positive direction at 7 m/s. The momentum is calculated thus;

Momentum = 30kg × 7m/s = 210kgm/s

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where the inclination angle of an accelerometer is adjusted and its voltage output is measured. If the accelerometer has a linear voltage output with respect to acceleration,

it is not necessarily expected that the voltage output with respect to inclination angle will also be linear. This is because the accelerometer measures the static acceleration due to gravity even when sitting still, and the angle of inclination can affect the gravitational force that is measured by the accelerometer.

In other words, the voltage output of the accelerometer may change non-linearly as the angle of inclination changes.

For example, as the accelerometer is tilted at steeper angles, the gravitational force it measures may become less linearly correlated with the angle of inclination due to the changing components of the gravitational force vector.

Therefore, it is important to design an experiment that carefully controls for the angle of inclination and measures the voltage output at different angles to accurately determine any potential non-linearity in the accelerometer's output.

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The farmer's decision to sell produce directly to the local market is an example of vertical integration.

Vertical integration refers to the process of combining different stages of production or distribution within a single company or entity. In this case, the farmer is bypassing the intermediaries or agents who previously bought his produce and sold it to the markets. By selling directly to the local market, the farmer is integrating the production and distribution stages of the supply chain, eliminating the need for intermediaries and gaining more control over the pricing and sales of his products.

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The correct option is B. The respective charges on each mat are +1 MC y -3 MC.

Charge refers to a fundamental property of matter that describes how objects interact electromagnetically. The charge can be positive or negative and is measured in Coulombs (C). Objects with the same charge repel each other, while objects with opposite charges attract each other.

Electric charge can be transferred from one object to another through processes such as friction, contact, or induction. The movement of electric charge is the basis for electric current, which is the flow of charge through a conductor.

A charge is also a conserved quantity in physics, meaning that it cannot be created or destroyed, only transferred or redistributed. This conservation of charge is a fundamental principle in many areas of physics, including electromagnetism and quantum mechanics.

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Complete Question:

Two charged conductive mats of equal radius are supported by non-conductive supports.  Their respective charges are -3 C and +7 MC.  If both mats come into contact and are then separated, then the respective charges on each mat are:

A. -Z UC Y +2 CM

В.  +1 MS У -3 MS

C. +2 C and +2 MC

D. -1 MC and - 1 MC

Answer:

hi

Explanation:

Answer:

The electric field at a point midway between the two charges is 2 x 10⁹ N/C.

Explanation:

Given;

first point charge, Q₁ = 3.0 C

second point charge, Q₂ = 5.0 C

distance between the two point charges, R = 6.0 m

The mid-point between the two charges, r = R/2 = 3.0 m

3.0 C <-------------------->3.0m<----------------------->5.0 C

The forces are acting in opposite direction, the electric field strength of each charge is calculated as;

\(E_1 = \frac{kQ_1}{r^2} (-\bar x)\\\\E_1 = \frac{9\times 10^9 \times 3}{3^2}(-\bar x)\)

\(E_2 = \frac{kQ_1}{r^2} (+\bar x)\\\\E_2 = \frac{9\times 10^9 \times 5}{3^2} (+\bar x)\\\\\)

The net electric field is calculated as;

\(E_{net} = \frac{9\times 10^9 \times 5}{3^2} \ - \ \frac{9\times 10^9 \times 3}{3^2}\\\\E_{net} = \frac{9\times 10^9 }{3^2} (5-3)\\\\E_{net} = 2 \times 10^9 \ N/C\)

Therefore, the electric field at a point midway between the two charges is 2 x 10⁹ N/C.

Thermal energy is transferred between objects only when they have different temperatures.

The movement of atoms and molecules within a substance is a form of energy known as thermal energy.

When two objects are in contact, or even in proximity, the atoms and molecules in the hotter object collide with those in the colder object.

Because of these effects, a portion of the kinetic energy from the more sizzling object is moved to the colder object, raising the temperature of the previous and bringing down the temperature of the last option.

A material's thermal conductivity — an estimation of how well it moves heat — decides how rapidly heat is moved between various sorts of materials.

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Answer:

the worker is doing work because he is moving the bale of cotton

Newton's law of universal gravitation doesn't say anything about the cause of gravity.

Einstein's theory of relativity does.

Answer:

539 N

Explanation:

Fg = mg

Step 1: Define

Fg = ?

m = 55.0 kg

g = 9.8 m/s²

Step 2: Substitute and Evaluate

Fg = 55.0 kg(9.8 m/s²)

Fg = 539 N

Answer:

Explanation:

Work = W = Fd = (80 N)(2 m) = 160 J

Power = P = W/t = (160 J) / (4 s) = 40 W  (watts)

The local group of galaxies which the Milky Way belong to is the Virgo Supercluster. C

The Virgo Supercluster as known as the Local Supercluster is a mass concentration of galaxies that contains the Virgo Cluster and Local Group which in turn contains the Milky Way and Andromeda galaxies, as a host as others galaxies.

Therefore, the local group of galaxies which the Milky Way belong to is the Virgo Supercluster.

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The final momentum of the body is equal to 120 Kg.m/s.

Momentum can be described as the multiplication of the mass and velocity of an object. Momentum is a vector quantity as it carries magnitude and direction.

If m is an object's mass and v is its velocity then the object's momentum p is: \({\displaystyle \mathbf {p} =m\mathbf {v}\) . The S.I. unit of measurement of momentum is kg⋅m/s, which is equivalent to the N.s.

Given the initial momentum of the body = Pi = 20 Kg.m/s

The force acting on the body, Pf = 25 N

The time, Δt = 4-0 = 4s

The Force is equal to the change in momentum: F ×Δt = ΔP

25 × 4 = P - 20

100 = P - 20

P = 100 + 20 = 120  Kg.m/s

Therefore, the final momentum of a body is 120 Kg.m/s.

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No, because superconductivity cannot occur if there is resistance

In addition to explaining electrical resistance, equilibrium distance theory also foretells the existence of superconductivity. According to its postulates, electrical resistivity decreases with distance from the equilibrium. There is only superconductivity at zero distance, with no resistance

The ability of some materials to transmit electric current with virtually little resistance is known as superconductivity.

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Explanation:

The bottom of the block is 0.1365 meters (or 13.65 centimeters) below the interface between the two liquids.

The electric potential at 70 cm to the right of the left charge is 7.125 x \(10^3 V.\)

To calculate the electric potential at a point due to two point charges, we need to use the following formula:

V = kq1 / r1 + kq2 / r2

where V is the electric potential, k is Coulomb's constant (\(9 x 10^9 N m^2 / C^2\)), q1 and q2 are the magnitudes of the charges, r1 and r2 are the distances between the point and the charges.

In this case, the left charge has a magnitude of 3 micro-c and the right charge has a magnitude of 7 micro-c. The distance between the left charge and the point of interest (70 cm to the right of the left charge) is 120 cm, and the distance between the right charge and the point of interest is 50 cm.

So, plugging in the values, we get:

V = (9 x \(10^9\)N \(m^2\) / \(C^2\)) x (3 x \(10^-6\) C) / 1.2 + (9 x \(10^9\) N \(m^2\) / \(C^2\)) x (7 x \(10^-6\) C) / 0.5

Simplifying this expression gives:

V = 7.125 x\(10^3\) V

Therefore, the electric potential at 70 cm to the right of the left charge is 7.125 x \(10^3 V.\)

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The surface can only withstand a pressure Face A (50cm × 30cm) and Face C (50cm × 15cm) as the surface can only withstand a pressure of 0.25 N/cm³.

The physical force used to apply pressure to an object is defined as such. Per square inch of an object, a force is applied perpendicularly to its surface. For pressure, the fundamental formula is F/A. (Force per unit area). The Pascal is the unit of pressure (Pa).

The four different types of pressure are absolute, atmospheric, differential, and gauge pressure. Have you ever noticed that when you use a straw to drink something, the air actually gets suked out? In reality, you're applying "Pressure" as you drink the beverage.

A box has the dimensions of 50 cm × 30 cm × 15 cm

Let each face be A, B and C

The weight of the box = 150 N

Formula for pressure is

P = F/A

To find out which face of the box can withstand a pressure of 0.25 N/cm

we need find the area of each face and find its pleasure

Face A = 50 cm × 30 cm

Area A = l × b

            = 50 × 30

            = 1500 cm²

Pressure A = 150/1500

                  = 0.1 N/cm³

                    0.25 > 0.1

The surface can definitively withstand the pressure of Face A

Face B = 30 cm × 15 cm

Area A = l × b

            = 30 × 15

            = 450 cm²

Pressure A = 150/450

                  = 0.3 N/cm³

                    0.25 < 0.3

The surface could not withstand the pressure of Face B

Face C = 50 cm × 15 cm

Area A = l × b

            = 50 × 15

            = 750 cm²

Pressure A = 150/750

                  = 0.2 N/cm³

                    0.25 > 0.2

The surface can definitively withstand the pressure of Face C

Thus, The surface can only withstand a pressure Face A (50cm × 30cm) and Face C (50cm × 15cm) as the surface can only withstand a pressure of 0.25 N/cm³.

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What is their to fix?

To examine and characterize matter, employ its physical qualities. Physical characteristics include things like shape, feel, color, smell, melting temperature, boiling point, density, solubility, polarity, and a host of other things.

Any measurable attribute that characterizes the condition of a physical system through its values is referred to as a physical property. The transitions between a system's brief states can be described by changes in physical characteristics of the system.

Measurements are a common nickname for physical characteristics. The properties are not modal. Physical amount refers to that of an identifiable physical characteristic.

Physical characteristics are often divided in intensive and extensive properties. Whereas an extensive property exhibits an additive relationship, an intensive property is independent by the system's size, scope, or the volume of its constituent parts. These categories are typically only relevant when the sample's smaller subgroups do not interact physically or chemically when combined.

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Answer:

observation

Explanation:

an inference is making an educated guess

a prediction and making a guess about what will happen next

when the velocity and acceleration of an object have opposite signs, the speed of the object increases, is true statement.

Velocity is a vector quantity that represents the rate of change of an object's position with respect to time, including both the speed and direction of motion. It is defined as the derivative of position with respect to time. Acceleration and velocity are closely related quantities in mechanics. Acceleration is defined as the rate of change of velocity over time. In other words, acceleration is the derivative of velocity with respect to time. When an object's velocity is increasing, its acceleration is positive, and when its velocity is decreasing, its acceleration is negative. If an object is moving at a constant velocity, its acceleration is zero.

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Answer:

i think its -212 celsius.

Explanation:

A buyer is purchasing a property for $120,000, which has an assessed value of $130,000. If the tax rate is $1.75 per $100, then the buyer will pay approximately $2,091.23 annually in taxes for the property.

To calculate the annual taxes the buyer will pay, we need to determine the property tax based on the assessed value and the tax rate.

Calculate the tax amount per $100 of assessed value:

Tax rate = $1.75 per $100

Tax per 100 = (assessed value / 100) * tax rate

In this case:

Tax per 100 = ($130,000 / 100) * $1.75 = $2,275

Calculate the annual tax amount:

Annual tax = (property price / assessed value) * tax per 100

In this case:

Annual tax = ($120,000 / $130,000) * $2,275 = $2,091.23

Therefore, the buyer will pay approximately $2,091.23 annually in taxes for the property.

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A full valence shell is one that is filled with the maximum number of electrons that it can hold. For all shells except the first shell, this number is 8 electrons.

Electrons are subatomic particles that have a negative electrical charge. They are the primary component of atoms, and they are responsible for most of the properties of chemical elements. Electrons orbit around the nucleus of an atom, and they can move freely between atoms in a chemical reaction. Electrons can also form bonds with other atoms, allowing them to create molecules and other compounds. Electrons also play a major role in electricity, as they are the particles that move through wires and other conductors, carrying energy from one place to another.

This is because each shell can hold a maximum of 2 electrons per sub-shell, and each shell has four sub-shells (s, p, d, and f). So, 2 electrons x 4 sub-shells = 8 electrons.

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We can deduce that the force of friction acting on the packing crate is equal in magnitude and opposite in direction to the component of the crate's weight parallel to the ramp.

The friction force balances out the force of gravity pulling the crate down the ramp, resulting in a net force of zero. This equilibrium of forces allows the crate to move down the ramp at a constant velocity without accelerating. When the crate slides at a constant velocity, it means that the force of friction is equal in magnitude and opposite in direction to the component of the gravitational force acting down the ramp. As a result, the net force on the crate is zero, and it continues to move down the ramp with a constant velocity. This scenario demonstrates the principle of dynamic equilibrium, where the forces are balanced, and there is no acceleration. Any imbalance in the forces would result in an acceleration, either speeding up or slowing down the crate's motion. Therefore, the fact that the crate slides down the inclined ramp at a constant velocity indicates that the forces are precisely balanced.

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Answer:

v1 = 2 mph = .893 m/s

v2 = 4 mph = 1.786 m/s    v2 = 2 v1

T = L / v1 + (200 - x) / v2    

Where T = total time and L is the distance swum followed by distance x

T = 2 L /  2 v1 + (200 - x) / 2 v1

2 v1 T = 2 L - 200 - x        rearranging

2 v1 dT / dt = 2 dL / dt - dx / dt = 0     setting dT / dt = 0

2 dL / dt = dx / dt

dL / dx = 1/2

Now sin θ = x / L = 1/2  

So sin 30 = 1/2 and θ = 30 deg

x = 80 tan θ = 80 * .577 = 46.2 m

200 - x = 153 .8 m

t1 = 46.2 / .893 = 51.7 sec

t2 = 153.8 / 1.786 = 86.1 sec

T = 51.7 + 86.1 = 138 sec

Answer:

1.7

Explanation:

because of the bowling

22.3 kg•m/s is the answer.

Answer:

erosion

Explanation:

Numerical Aperture (NA) is a measure of the ability of an optical system, such as a microscope, to gather and focus light.

The two light capturing lenses in a microscope are the objective lens and the eyepiece lens. The objective lens is located close to the object being viewed and is responsible for capturing the light that forms the image. The eyepiece lens is located close to the viewer's eye and magnifies the image produced by the objective lens.

The purpose of the condenser is to focus and direct light onto the object being viewed. It is located below the stage of the microscope and typically consists of a lens and an aperture. The aperture controls the amount of light that enters the microscope and helps to increase the resolution of the image by reducing the size of the light cone that enters the objective lens.

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